Most of you have probably heard about Google App Engine , which lets you write web applications that run on Google's infrastructure. But did you know that the code which you develop using the AdWords API can be easily hosted on App Engine, thus making it many times easier to build, maintain, and scale your application as your traffic grows? Today,

We'll be performing routine system maintenance on Saturday, February 21 from approximately 10:00am to 2:00pm PST. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal. Cheers, -Jeffrey Posnick,

We, at the AdWords API Team, are often asked questions such as " Where have all my units gone?" and " How many API units has a particular account used in the last month?" Luckily, we have supplied you with a great set of tools with InfoService to answer these questions. In this blog post, we'll talk about some basic uses of this service, as well as some caveats that can be solved using some more advanced techniques.

The AdWords API team has been hard at work on some big improvements for 2009 that we're very excited to bring you. Although we're still working on the details, we wanted to give you a preview so you can plan your programming resources accordingly. These fundamental changes will offer you some major advantages,

We'll be performing routine system maintenance on Saturday, January 10 from approximately 10:00am to 2:00pm PST. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal. Cheers, -Jeffrey Posnick,

We're happy to announce the release of the AdWords API version 13 )v13(! V13 introduces several changes to the AdWords API; we've highlighted the main points below. For a complete list of v13 changes, please see our release notes . V13 Highlights New geotargeting options: Target multiple geographic levels )countries, regions, metro areas, and cities( within a single campaign, target specific regions of multiple countries in a single campaign,

Welcome to part 5 of the series of posts that will give tips and tricks on how to deal with SOAP issues. As a SOAP-based web service, AdWords API can be easy to make calls to. At the same time, it can sometimes be difficult to debug the SOAP faults. In our previous episode , we discussed SOAP errors related to failed validations. Today we'll discuss SOAP errors related to syncing errors and concurrent changes . You can find links to our earlier posts here: Part 1 , Part 2 ,

We'll be performing routine system maintenance on Saturday, September 13 from approximately 10:00am to 2:00pm PDT. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal. Cheers, -Jeffrey Posnick,

Cutting API calories from your app One of the questions we often get asked by developers is how to spend fewer API units; if you're not careful, you might end up wasting a lot unnecessarily. Thankfully, you should be able to curb your software's appetite with a few simple suggestions: - Two ways to get there Do you run a lot of campaigns across your client accounts? If so,

We want to give developers a heads-up about an upcoming change affecting AdWords reports. If you retrieve reports via the AdWords API's getReportDownloadUrl)( or getGzipReportDownloadUrl)( method then these changes may potentially affect the data in your reports. These changes impact a small number of columns and should not fundamentally change the way you parse report data. We plan on rolling out these changes on Tuesday, August 19 .

As you could imagine, Google has a lot of historical data about keywords and the traffic they generate. Harnessing this data can give you a helpful starting point when you're trying to choose cost-per-click )CPC( bid ranges and keywords for a new product, for which you have no historical keyword or bid data in your own account. AdWords API users can access our trove of historical keyword and bid data via the Traffic Estimator Service ,

We'll be performing routine system maintenance on Saturday, May 17 from approximately 10:00am to 2:00pm PST. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal. Cheers, -Jeffrey Posnick,

We are happy to announce the release of the AdWords API Version 12 )V12(. V12 introduces several changes to the AdWords API. Below, you'll find the main highlights from this release. For a complete list of V12 changes, please see our release notes . V12 HIGHLIGHTS Conversion Optimizer support: Now you can enable Conversion Optimizer to pay only when an ad click leads to a conversion to adjust cost-per-acquisition bids through the AdWords API .

We are happy to announce the release of our new Python client library . The AdWords API Python Client Library makes it easier to write Python clients to programmatically access AdWords accounts. Main features include: the ability to hide the SOAP layer from end users, on demand logging of all SOAP messages, support for API calls against the production system or sandbox, automatic data type conversion for all API call parameters, tracking of all API usage,

Based on your feedback, we have developed a new report type designed specifically for API developers -the Account Structure report. This new report type allows you to download all of your account attributes )without statistics( from a single report, saving everyone time and API units. The Account Structure report is available immediately through the new DefinedReportJob object )introduced in version 11(, and can be aggregated at the campaign, ad group,

We'll be performing routine system maintenance on Saturday from approximately 10am to 2pm PST. You won't be able to access AdWords or the API during this time frame, but your ads will continue to run as normal.

We're planning to refresh the Sandbox tomorrow, Wednesday October 31, at 3 p.m. PDT. As a result, it will be unavailable for several hours and all the data will be cleared. You can regenerate your client accounts afterwards by sending any valid request to the Sandbox without a clientEmail.

Some of you have pointed out a bug in v11 reports causing the omission of certain ID columns. We apologize for the inconvenience. Our engineers are working to resolve this problem within the next few days. We will let you know as soon as the bug is fixed. UPDATE We would like to let you know that this bug has now been fixed. - Borana Toska,

Aaron Karp, AdWords API Team Version 11 of the AdWords API includes a significant overhaul to the way you schedule reports and the data you are able to retrieve. In the reconfigured Report Service, you now have access to most of the report types and columns that are available through the AdWords Report Center, which means more advanced stats and breakdowns than ever before. Going forward, the API should be much more synchronized with the AdWords front end,

We've rescheduled this month's system maintenance for Saturday from approximately 10 a.m. to 2 p.m. PDT. You won't be able to access AdWords or the API specifically during this period, but your ads will continue to run as normal. Brian Kennish,